Publication detail

Mechanical response of novel SiOC glasses to high temperature exposition

HALASOVÁ, M. CHLUP, Z. STRACHOTA, A. ČERNÝ, M. DLOUHÝ, I.

Czech title

Mechanická odezva vývojových SiOC skel vůči vysokoteplotní expozici

English title

Mechanical response of novel SiOC glasses to high temperature exposition

Type

journal article - other

Language

en

Original abstract

The presented work describes mechanical properties of materials prepared by the pyrolysis of polysiloxane resins. The polymeric precursors have different chemical composition. Materials under investigation are predetermined for high temperature resistant applications usually in composite form, i.e. accompanied by some reinforcement. Instrumented hardness tests were employed for material characterisation. The Vickers hardness, Martens hardness and indentation elastic modulus were the key parameters, determined either from the standard optical technique or load–indentation depth curves. The influence of mechanical properties on the monomers ratio was established. The exposition to the temperature between 1200 C and 1500 C in air was applied to observe damage caused by these severe conditions.

Czech abstract

Práce popisuje mechanické vlastnosti materiálů připravených pyrolýzou polysiloxanových pryskyřic. Výchozím materiálem jsou polymerní prekurzory odlišných chemických vlastností. Zkoumané materiály jsou určeny pro vysokoteplotní aplikace obvykle v podobě kompozitu, tzn. že obsahují výztuž. Pro materiálové hodnocení byl použit test instrumentované tvrdosti. Vickersova, Martensova tvrdost a indentační modul pružnosti byly klíčovými parametry, určenými standartní optickou metodou, či ze závislosti napětí – indentační hloubka. Byl stanoven vliv poměru monomerů na mechanické vlastnosti. Dále bylo studováno poškození materiálu po jeho vystavení teplotám od 1200 do 1500 stupňů Celsia.

English abstract

The presented work describes mechanical properties of materials prepared by the pyrolysis of polysiloxane resins. The polymeric precursors have different chemical composition. Materials under investigation are predetermined for high temperature resistant applications usually in composite form, i.e. accompanied by some reinforcement. Instrumented hardness tests were employed for material characterisation. The Vickers hardness, Martens hardness and indentation elastic modulus were the key parameters, determined either from the standard optical technique or load–indentation depth curves. The influence of mechanical properties on the monomers ratio was established. The exposition to the temperature between 1200 C and 1500 C in air was applied to observe damage caused by these severe conditions.

Keywords in Czech

Tvrdost; Sklo; Mechanické vlastnosti; RTG

Keywords in English

Hardness; Glass; Mechanical properties; X-ray

RIV year

2012

Released

01.12.2012

ISSN

0955-2219

Volume

32

Number

16

Pages from–to

4489–4495

Pages count

7

BIBTEX


@article{BUT101122,
  author="Martina {Halasová} and Zdeněk {Chlup} and Adam {Strachota} and Martin {Černý} and Ivo {Dlouhý},
  title="Mechanical response of novel SiOC glasses to high temperature exposition",
  year="2012",
  volume="32",
  number="16",
  month="December",
  pages="4489--4495",
  issn="0955-2219"
}